Pipe-joint.



C. RBVAILLOT.

PIPE JOINT. APPLICATION FILED MAB. 6, 1909.

974,517. l Patented Nov. 1, 19.10.

ml mmm: Flrllu co.. vusmNaraN, m c.

UNITED STATES PATENT OFFICE.

CLAUDE REVAILLOT, OF NICE, FRANCE.

PIPE-JOINT.

Specification of Letters Patent.

Application filed March 6, 1909.

Patented Nov. .1, 1910.

Serna No. 481,683.

To all whom 'it may concern:

Be it known that I, CLAUDE REvAILLo'r, a

,citizen of the Republic of France, and resid- I lng at Nice, 1n France,have invented certain new and useful Improvements in Pipe- Joints, ofwhich the following is a specification.

This invention has for its object novel means for the rapid joining oftubes, made of caoutchouc, linen and the like.

This joint is composed of two identical parts. Each part consists of alittle spiral ring, a ring of caoutchouc and an independent collar. Thewhole is shown in the accompanying drawing and described in thefollowing specication.

Figure l shows a longitudinal section through the aXle of the two piecesassembled. Fig. 2 shows a perspective view of the two parts of thejoint, separated.

The cylindrical junction-piece .B consists of three trapezoidal wingsleaving between them spaces of the same form, but inverted; this formfacilitates the assemblage. Each end of these three wings bears acircular groove I, the utility of which will be explained hereafter, aswill also the circular groove K at the bases of the wings.

The piece C has the form of a channeled and milled crown to facilitatethe holding in the hand; it bears another crown in relief c which islodged in the groove K above mentioned. Upon this crown in relief aredisposed three studs d, one corresponding to each wing; these studs areto be lodged in the grooves I.

The groove K is intended to be occupied by these studs at the time ofassemblage. The crown in relief is maintained in the groove by means ofthree sunken screws M. The said screws are so placed that they do notinterfere with the displacement of the stud d, when it is engaged underthe wing; moreover they pass through the crown in relief with the aid ofan opening c, which permits only a limited rotary movement of the crownC on the piece B.

The spring E is placed between the central piece A and thejunction-piece B, in a cavity, as shown. The spring becomessemi-circular when the piece A is in place and has for its object tomaintain the coupling in a steady condition. To avoid any disjoining inservice, the grooves I are slightly helicoidal so as to produce a moreefficient pressure upon the rings f of caoutchouc.

The central piece A is cylindrical, at one end a circular groove, havingthe form of a semi-circle, will receive the ring of caoutchouc. Thecollar R, in only one part, will bear an inner circular groove, in whichmay slide a ring of metal in three parts and of a smaller diameter thanthat of the tube.

The fastening will be produced by means of screws with countersunk headsshown in Fig. 1.

To assemble the elements, when they are disassembled, the operator takesone part C in each hand, introduces the wings in their respectivelodglnent, and 0'ives a slight rotary motion to the pieces C, so as toengage the studs in the corresponding grooves. The spiral springfacilitates the operation, and it maintains the fastening: theseparation is thus impossible during use.

The advantages of this joint are the following: It is a simple rapidlymanipulated assemblage, necessitates neither tools nor special key; itis absolutely tight. This joint presents no projection, exposed to bedeteriorated and thus interfere with good working.

What I claim is 1. In a device of the character described, a cylindricaljunction piece having trapez'oidal wings with spaces therebetween, eachwing provided with a circular groove, a member having Va channeled andmilled crown and a crown in relief provided with studs correspondinginvnumber to said wings and engageable in the spaces between the outerend of the wings of the other member, a central cylindrical memberhaving a groove and a spring disposed between said central member andthe junction piece, and elastic rings in the groove of said centralmember.

2. The combination with a central cylindrical member having a circulargroove, a cylindrical junction piece having trapezoidal wings with acircular groove in each .wing near the outer end and one near the base,a member in the form of a channeled and received in the groove at thebase of the wings and provided with studs engageablein the grooves atthe outer end of the wings of the opposite member, means securing thecrown in relief in the groove, and aspring disposed between the junctionpiece and central member.v

3. The combination with cylindrical central pieces having studs,cylindrical junction pieces at opposite ends thereof and having helicalgrooves receiving said studs to eHect a coupling, the central pieceshaving at their adjacent ends semi-circular grooves, elastic ringsl insaid grooves, a collar on each junction piece and having an innercircular groove, a metal ring slidable therein, and springs4 between thecentral pieces, and junction pieces, and screws for securing theparts inposition.

l. In a device of the character described, central cylindrical pieces,cylindrical junction pieces over the outer ends of said central pieces,the central pieces having wings

